PDF Extra - Scan, View, Fill, Sign, Convert, Edit
NokoPrint - Wireless and USB printing
Xodo PDF Reader & Editor
Microsoft Word: Write, Edit & Share Docs on the Go
Google Slides
Google Sheets
Adobe Acrobat Reader: PDF Viewer, Editor & Creator
WPS Office - Free Office Suite for Word,PDF,Excel
OfficeSuite Pro + PDF (Trial)
PDF Utils: Merge, Reorder, Split, Extract & Delete